Model

CS-137

CS-137-2503

CS-137-1003

Measurement sample

BHF (Hydrofluoric acid/Ammonia fluoride solution)

Measurement principle

Absorption spectrometry

Concentration computation principle

Temperature-compensated multivariate analysis

Measurement range

NH₄F: 15.0 to 25.0 %
HF: 0.00 to 3.00 %
H₂O: 72.0 to 85.0 %

NH₄F: 0.0 to 10.0 %
HF: 0.00 to 3.00 %
H₂O: 87.0 to 100.0 %

Reproducibility

NH₄F: ±0.3 %

NH₄F: ±0.3 %

(Peak to peak)

HF: ±0.25 %
H₂O: ±1.0 %

HF: ±0.25 %
H₂O: ±1.0 %

Chemical

Temperature

20 to 30 °C

conditions

Flow rate

20 to 60 ml/min.

Pressure

0.10 to 0.20 MPa

Measurement cycle

Approx. 3 seconds minimum

Equipment temperature

20 to 30 °C

Operation panel

1)Temperature level display:
Ammonia fluoride solution, Hydrofluoric acid, Water

2)Alarm display (Ammonia fluoride solution, Hydrofluoric acid):
Concentration low-low limit, Concentration low limit,
Concentration high limit, Concentration high-high limit

3)Alarm value settings
(Ammonia fluoride solution, Hydrofluoric acid):
Concentration low-low limit, Concentration low limit,
Concentration high limit, Concentration high-high limit

Serial input/output

RS-232C
1)Concentration data:
Ammonia fluoride solution, Hydrofluoric acid, Water

2)Alarm value settings
(Ammonia fluoride solution, Hydrofluoric acid):
Concentration low-low limit, Concentration low limit,
Concentration high limit, Concentration high-high limit

Parallel input

12 to 30 V DC (photocoupler insulated)
Parallel concentration alarm (ON/OFF)

Parallel output

Maximum current when open collector output is ON: 5 mA
Maximum voltage when open collector output is OFF: 30 V
1)Alarm output: Ammonia fluoride solution, Hydrofluoric acid:
Concentration low-low limit, Concentration low limit,
Concentration high limit, Concentration high-high limit
2)Device error (including liquid leakage)
3)Under measurement

Analog output

4 to 20 mA (2 outputs: NH₄F concentration, HF concentration)

Power

24 V DC ±10%, 2 A

Dimensions

205 (W) x 329 (D) x 269 (H) mm

8.1 (W) x 13 (D) x 10.6 (H) in

Mass

Approx. 11 kg

Connection pipe size

For inlet and outlet: Outer diameter 6 mm (inner diameter 4 mm)

Pipe connection

Nippon Pillar Super type